Grub arguments missing on boot

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I just got a new ASUS UX32a, and put Fedora 17 on it, and to optimize the power settings, I added the following arguments to etc/default/grub:
Code:
pcie_aspm=force drm.vblankoffdelay=1 i915.semaphores=1
Then, I ran the following:
Code:
grub2-mkconfig -o /boot/grub2/grub.cfg
And when I look at /boot/grub2/grub.conf, the new arguments are in there:
Code:
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub2-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; t
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